Introduction to the plot of "Criminal Police Mission":
The beautiful married woman, Guo Yamai, was found lying down by the river embankment with beautiful scenery. Since Guo's husband, Yan Yiding, was watching a movie at the Ziguang Cinema at the time of the incident, and had a movie ticket as evidence, he was excluded as a suspect. Forensic doctor Lao Liu found seafood seasoning "Si Man Hua" in Guo Yamai's stomach contents, which led to the discovery of the seafood restaurant where Guo Yamai had eaten before she was killed. The investigators uncovered that the owner of an internet cafe, Zhang Xixi, had a meal together with Guo Yamai. After DNA testing...